SX1504

SX1504/SX1505/SX1506 4/8/16 Channel GPIO WIRELESS & SENSING SX1504/SX1505/SX1506 4/8/16 Channel GPIO with NINT and NRESET GENERAL DESCRIPTION The SX1504, SX1505 and SX1506 are complete General Purpose parallel Input/Output (GPIO) expanders ideal for low power handheld battery powered equipment. They allow easy serial 2 expansion of I/O through a standard I C interface. GPIO devices can provide additional control and monitoring when the microcontroller or chipset has insufficient I/O ports, or in systems where serial communication and control from a remote location is advantageous. These devices can also act as a level shifter to connect a microcontroller running at one voltage level to a component running at a different voltage level. The core is operating as low as 2.5V while the I/O banks can operate between 2.5V and 5.5V independent of the core voltage and each other. Each GPIO is programmable via 8-bit configuration registers. Data registers, direction registers, pullup/pull-down registers, interrupt mask registers and interrupt registers allow the system master to program and configure 4 or 8 or 16-GPIOs using a 2 standard 400kHz I C interface. The SX1504, SX1505 and SX1506 offer a unique fully programmable logic functions like a PLD to give more flexibility and reduce external logic gates used for standard applications. The SX1504, SX1505 and SX1506 have the ability to generate mask-programmable interrupts based on falling/rising edge of any of its GPIO lines. A dedica...